Centrifugal pumping mechanism.



M. B. VAN NESS. CENTRIF'UGAL PUNIPING IVHECHANISIVI.v

APPLICATION FlLVED MAY25, 1914.

Patented 111111511916 2 SHEETS-SHEET l.

lil

I@ n i VIAL/fl..

v2v SHEETS-SHEET 2.

Patented 5311.18, 1916.

M. B. VANNESS. CENTRIFUGAL PUMPINGIVII-CHANISM.v

APPLICATION FILED MAY 25, 1914.

' MARVIN B VvAN nnss, or WELSH, Louisiana.

ijieaeai.

CENTRIFUGLAL UMPING MECHANISIVI.

Specification of Letters E'atent.

Patented Jan. f8, 1916i.

appiicetipnsied may 25, 1914. serial No. 840,784.

To all whom it may concern Be it known that I, MARVIN B. VAN Nass,

residing at Welsh, in the'paris'h of Jefferson Davis and State of Louisiana, have invented certain, new and useful Improvements in Centrifugal Pumping Mechanism, of. which -the following is a specification.

.ing as a conduit for lconveying oil to the Y several bearings successively from the top of the Well tothe bottom of theishaft casing. v The difficulty heretofore encountered in the pumping apparatus of this kind is to aline the bearings properly and yet have them sufficiently snug to prevent the passage Vof the oil With undue rapidity so as to maintain a certain amount of oil in each section 4of the. shaft casing the oilacting in convnectionjvith the several bearings, serv ing'the function of a closure to prevent the un ter being pumped from being forced up the shaft casing through the pump neck Vbearing and the successive bearings above the same. If the bearings be not properly alined they Will over-heat and the shaft will become frozen in its bearings.` If, on the other hand, the bearings be made so large that the oil passes freely through the same, the suction of the pump impeller will draw the oil out and contaminate the Water.

Another objection to the type ofapparatus above referred to, is the expense of manufacture, as all of the bearings must be machined and the shaft casing must be held under great tension in order to assure the alinement of the bearings.

My invention therefore has for its ob]ect to overcome. as largelv as maypbe, these objections and to combine a pumping mechanism that Will-be less expensive to manufacture: one in which the use of bearings. intermediate the top and bottom bearings is made unnecessary regardless of the depth to Which the pump may be installed; one in which the use of oil lubricant in the shaft casing may be avoided; and one in which the circulation of clean 'Well Water may be had through the shaft casing to fill the casing from 'top to bottom and form a path or fluid cushion inwvhich the shaft runs, the fiuid acting as a cushion,`to prevent, to a large degree, lateral vibration or Whipping of the shaft, and thus making the use of a series of intermediate guide bearings unnecessary. Y

In addition to providing means for ac, complishing the vforegoing objects, the invention also resides in the provision of those novel details of construction, combination and arrangement of parts, all of Which Will be first fully described, and then be specifilcally pointed out in the appended claims,`

reference being had to the accompanying dra-Wings, in which:

Figure l, is a central longitudinal vertical section of the upper part of the pump ing mechanism. Fig. 2 is a cross section on the `line 2 2 of Fig. 1. Fig. 3 is a detail section of a part of the invention. Fig. 4;

is avertical longitudinal section of the lower end of the pumping apparatus. Fig. 5 is a vertical longitudinahsection of a modification of the "hump neck bearing. Fig. 6 is a diagrammatic vertical section and part elevation showing the apparatus made With several sections of pipe.

In the drawings in Which like numerals and letters of reference indicate like parts in all of the Figures', l is the/,pit or Well casing, which may be of the @rdinary construction, 'and which, at the top receives the pit top 2.

3 is the pump head Which-is secured to the pit top 2, asat 4, the pump head 3' having an internal thread 5 at its lower end toreceive the water pipe .6. The pipe 6 may be made either in a single length or in sections joined together as at 7, depending on the depth of lthe Well, andas may be made necessary bv the requirements of the particular Well in which the mechanism is to be employed.

9 is the outlet pipe for the Water which is joined at 10 over the discharge opening S, of the pump head 3.

15 designates `the pump casing which in the present form of the invention is of the duplex type and has its ends closed by the cans 13 and 16, Which are secured at 14 and 17, respectivelv to the casing 15. To the upper can 13. the union 11 that receives the lower end of the Water pipe 6, is fas tened as at 12 so as to bring the pipe 6 1n The suction pipe 19 is connected yto the casing 15 through the medium ofthe union 18. The pump casing 15 inclosesthe parti tions which carry the shaft bearings 2O .and 2l; respectively and also inclose the impellers23. j

24 is the lower thrust bearing which vissef cured tothe shaft 22, it being of course un coupled together by-sleeves 25, as is the usual practice.' The shaft22, at its upper end, has.

a lfeatherslotor groove 26 in which the key or'l feather 36 of the driving pulley-35."lies,

derstood that when the water pipe 6, and the shaft V casing 44, are madev in sections, the shaft 22 would also be made inl` sections,

and. withwhich thelset screw 29 of1theadjusting n utj28, coperates. The adjustmg nut'28-has each` face tapped at 30 -to receive'y the/set screw 29, whereby minute adjustments may be made, and the set screw always enters' into-thef groove 26 to assure nony., .slipping of the adjusting nut, `it being understood of c 'ourse that the upper end of the "shaft 22 will be threaded as at 27 to receive thenut 28. y

l 31 isvthe main bea-ring member that ts on '2x5-., 4 -thepump head'3 and supports the line shaft l22fand lthe Iimpellers 23. The bearing 31`is p"ocke'ted and bushed with bearing metal kas at 33 to receive the long hub- 34 ofthe pulley 35.

37 is theupper ball race member that uturns with 'the head 34 and between whichand the lower ballrace member 3S, the anti-friction bearings 40, are located, the members 37, 38

and 40 acting-as a thrustl bearing for the shaft 22, 'Below the web 39 ofthe .bearin Ymember 31, the said membcris counter-bore asat 41 andtappedasat 42 to receive the upper end-of the shaftfcasing 44 which is threaded. at 4 3 l to cooperate with the The shaft 44 usually formed of .sections of any convenient length and united L by suitable couplings 46', IThe casing serves the dualA function of keeping the moving column of water vin the dischargecasing 6 I vaway .from the shaft and acts as a container for'the Watercushion that servesto restrain the.longiti1dinal shaftA against lateral vibration.`V `The gwaterW-ith the sand and detritus that pa-s'ses' up through the discharge pipe 6,

thus does not come in contact with'the shaft Aand ini-order to obtain'a supply of 'clean `water forlilling the shaft casing or circulating .-through thesame, I have provided meansfor separating, as it were, the sand' and detritus from a portion of the water pumped and conveying the water .fromwhich the sand and detritus has been separated, into thevline shaft casing 44. I

In order' to keep the casing44illed with 'clean well water, z'. e., Water free from sand and detritus, the head, bearing 31 is provided with an enlargement 45 which-has a duct 46 that communicates with the water jacket at a higher level `thanthe 'discharge'of the f pipe 51, so'th'at the sand' may bje cast out.

. Tlie connection 53-54 may be provided with a trap and screen 56 to screen the Awater space 32 at the top of the same.` The Water which is forced into the water jacketspace 3 2 is still water and as the sandand detritus 'is heayier than the water, Iit settles in the space 32 and passes out' through the dis-v charge 9 with the dischargewater.

A pipe 51 cenveysthe cooling water from` the top ofthe jacket 32 v(at the place wherek it has the least impurities) into'the discharge ofy the pum-p. -'This pipe 51 is tapped and 'provided'withabranch 48 in which there is ay cock 4S) by means of which a portion of the Water may l be delivered into the pipe 50 thev pocket 41 and therethrough discharges i f which discharges into 'a cup 52 that is piped` v v up yat 53-54 with ak bore 55 thatleads' into into the casingv 44. 'The pipe 48,'it will be.'

noticed extends vertically and thus, inc onl pipe 51, forms a U or trap in which any sand or detritus that might pass ythrough the bore 47 will be precipitated and' passed out throughA the dischargeA end of: tlie'pipe 51,' it being understood atl-iat the valve 49 is located nection with theduct 46 and a portion of the thatpasses into the chamber 41 although in practicelA find' that the precipitation of the sand and detritus-is usually complete before the water enters the cup 52 `and hence the use of the screen 56 is not always necessary.

In order thatthe water may be circulated in the casing 44u and thev same be kept constantly filled with fresh water, Vthe pump .neck bearing 21 may be provided Iwithl a groove 57 Athat opens adjacent to the upper suction zone of the impeller 23, so that the suction' produced by the impeller will tend toevacuate the casing 44. 'Instead ofprovidingthe pump neck bearing 51 with the Y groove 57, the bushing 61 may have one` or v more grooves 62 so that when the pump is running and the lower thrust bearing 24 is raised ofi the bushing (as it always should be underl operative conditions, since this bearing is an emergency one only) the suction will aid gravity intending to evacuate the casing .44'and hence maintain a circulation of Water in the same,

The latter form indicated in Fig. 5 1s particularly advantageous for the reason that Vwhen-thepnmp is idle -and bearing 24 is dropped onto the bushing G1, it will form a closure for thefgroove 62 'and permit the.

casing 44' to be iilled with oil, kerosene or other substance to prevent rust. This is be readilyV understood by those skilled in the art to which it appertains.

Vhat I claim is:

l. In a centrifugal pumping apparatus,

the combination With a centrifugal pump, a Well casing in Which said pump is suspended, a pit top on said casing, a pump head mount- `ed on said pit vtop and having a Water discharge outlet, a discharge pipe consisting of a pluralityof sections removably coupled together and coupled with said pump head arid with the pump bowl of said centrifugal pump, said centrifugal pump including. a pump neck bearing, a head bearing mounted on said pump head', a line shaft extending through said head bearing and vcoupled With the impeller shaft section of the'centrif'- ugal pump, said. line shaft comprising a plurality of sections coupled together, a line shaft casing surounding said line shaft and consisting of a plurality of sections coupled together, the end ones of said sections being coupled respectively to the head bearing and the pump neck bearing, said shaft, casing being of greater diameter than the greatest diameter of the line shaft and its couplings whereby to provide avfree passage through which the line shaft may be endwise drawn without obstruction.

2. In an apparatus of the class described, the combination witlrthe centrifugal pump which includes a bowl, an impeller', a .stub or impeller shaft` section and a pump neckbearing' for said shaft section, of a sectional Water discharge duct for suspending said pump bowl, a pit top, a pump head mounted on said pit top to whichV said Water discharge duct is secured, a head bearing, a sectional shaft casing secured to said head bearing and to said pump neck, said shaft casing having an uninterrupted passage from end to end, and a sectional line shaft projecting through said shaft casing and secured to said impeller shaft section, said line shaft passing through said head bearing and a drive pulley mounted on said line shaft. e l

.3. A centrifugal J pump comprising the following elements in combination, a discharge casing suspending said pump in the well, a pump shaft passing through said discharge casing to the top of the Well, a shaft casing incasing saidvshaft, a drive pulley and a bearing therefor mounted at the top of the Well, a water jacket for said bearing, said jacket being in communication with the discharge column of"y Water and means for conveying the Water -from said jacket into the shaft casing. Y.

4. A centrifugal pump comprising the following elements in combination, a sectional 'discharge casing, a sectional pumpshaft passing through said casing from the pump to the top of the Well, a sectional shaft casing inclosing said shaft, a driving pulley,

and a bearing therefor mounted at the top of the Well, a Water jacket for said pulley bearing, said jacket being in communica-y tion with the discharge column of Water, means for conveying the Water from said jacket into the shaft casing, and means for vseparating the sand and detritus from theA Water prior `to conveying the Water into the [shaft casing.

head, a line shaft extending from the pump to the pump head, a closed pipe -incasing said shaft, a discharge casing surrounding' said pipe from the pump to the top of the Well, and means for maintaining said shaft pipe filled with clean Water, said shaft pipe having its Walls of substantially uniform diameter from the toa to the bottom and composed ofa plurali y of sections coupled together, and said shaft rotating freely Within said'pipe.

` 6.' In an apparatus ofthe classy described, the combination with the centrifugal pump which includes aboWl, an impeller, a stub or impeller shaft section and a pump neck bearing for said shaft section, of a sectional Water discharge duct for suspending said pump bowl, a pit top, a pump head mounted on said pit top to which said water discharge is secured, a head bearing, a sectional shaft casing secured to said head bearing and to said pump neck, said shaft casing having an uninterrupted passage from end to end, a sectional line shaft projecting through said shaft casing and secured to said impeller shaft section, said line shaftpassing through said head bearing, a drive and delivering it into the shaft casing, said pump including a pump neck bearing to which said shaft casing is attached and said Dump having a passage for effecting communi-cation between the interior of said shaft casing and the upper suction zone of the .impeller of the rotary pump.

8. In a pumping mechanism, the combination with the pump casing, the pump head, and the Water discharge pipe and the line shaft casing that connects said pump casing With said pump head, an impeller and a line shaft, of a head bearing mounted on said pump head and having a passage through which said line shaft projects, said head bearing having an elongated bearing pocket, a pulley having an elongated bear-' `ing vhuh mounted in said pocket and `conf).

- nected to said shaft to turn the same, a

thrust bearingin said'pocket for said p'u l-` V ley hub, a WaterI cooling jacket surrounding said elongated bearingpockethand meansffor'f effecting a circulation-'of v,water .through said.-`

, "jacket andfthrough said lineshaft casing.

9'. In a pumping mechanism, the combi-V nation` With the pump?casing',` the pump head, and the water discharge pipe and the line shaft easing that'conne'cts said 'pump` casing 'With' said` pump head, an impeller and a line shaft,',o`f ahead hearing mountedv on said pump headgand-.ha'ving ap'a'ssagethrough iwliiieh sai-d 'line shaft projects', said A' head be'arifrrghaving elongated bearing "pocket, a vpulley ving hub mounted in saidpoclt and con@ nected to said shaft-to' ,turnthesa`me,a`

aving an elongated bearthrust bearing in said|` pocket yfor said 'pulley hub', a Water cooling'jacket-surrounding said, elongated bearing pocket and means for effecting 'a circulation of Water' through saidjacket, an'dvthen linto said line shaft casing.A 's' t 10. In aj'pumping mechanism, the combi-.j nation W1 th the pump "casing, the .pump

head, and the Water vdischarge pipeand the line shaft casing that 'connects .saidpump casing with lsaid pump-)heath anjimpeller and a line shaft, of 'a` head hearing-'mounted on said pump. headkand havin-g a passage through tv hllchsaid' line shaftprojefc'ts, s aid hqe'ad'hearlng having an elonga-tedlhearing ket, a'pulley having an elongated heariig-hub' mpunted in'sai'd lpooketand conthrustl bearing in said pocket for said pul-l ley hub, Water cooling acket siirrounding said elongated bearing pocket andmeans for effecting.. .a`4` circulation of Water through,

said., ack'et-Qand thenseparate thesand and -ladri-f1.5 ',fIfOm a portion of such circulated. vWater and passing the Water that has-heen freed from-'.lthe sand and detritus intolfthe @managing-1; t

= 11.`.In a pump mechanism, the combina..-

'ti'on with afpump casing, the pump head,

the Water discharge pipe and thelineshaft casing, the .impeller' alnfdthek line shaft, 'ofja head hearingl .mounted on saidlpump head and haVing-apassage through which' said linel shaft -projects, a pulley mounted on said line shaft, a thrust bearing carried by said hea-d 'bearing for said pulley,,jsaid'head bearing having a Water jacket space, means for effecting A a circulation of Water through` said jacket" space and means for conveying,y

a Aportion of such Water from th-ejacket space into the line shaft'casing.A

12.' In a lcentrifugal pumping' apparatus, the combination vwith a centrifugal pump, "a'avell casing vin which said pump is suspended, 'a pit top o onsaid casing,' a pump .ieadinounted' on said pit top and having a' )vater discharge `outlet,.a discharge pipe;

consisting of a plurali-tyl of sectionsremow .ablylcoupled,togetherand` coupled with said punip hefad and ,withthepumpjbowl of said centrifugal pump, 'n said. rcentrifugal pump f "including a pump neck hearing, ajheadbeari ingzjmounted on fsaidipump head, 'a Vline shaft .extendingthrough said head bearing and coupled with the impeller lshaft s'ection comprising a pluralityofsections cou-pled rtogetheiga line shaft casing surrounding' said line shaft and'consisting 0f a pluralityofy sections coupled `together, the end Ones o f said line's'haft casing sections ,being cou- "plerd respectiyely'lto the headbearing; and, the pump neck'heaiing, said shaftcasing heing of gieater diameterthan the|` greatest diameter of ,the line shaft and,l its couplings 'whereby to 'provide a freepassage vthrough which the .line shaft may beendwise drawn without obstruction, and a lower' thrust hea-ringA on the impeller `shaft section, .and

means for drawing up on lsaid line shaft to raise said'lower thrust hearing from frictional engagement with said pump neck `bearing .topermit.access-fofvilubricant to the pumpfnelckhearing.

'13, A:In anapparatusof th 'class vdescribedt the: combinatin ui'ith thefeentrifugal pump whichJ 1ncludes"a'boufl; an'mpelIer, a stub 0r impeller shaftsection, a. pump neck tional wateridischarge. duct for suspending said pump bowl., a pit top and a pump head mounted onsaidpit-top to whichsaid'water discharge vduct is -secured,`a head bea-ring,

line shaft passing through' said head hear- 1,ng,'la'4 drive lpulley Inountedon said line sha.ft,'and a lower thrust bearing -on'the im; peller shaft sectiongand'ame'ans forr draw.-

ing up onsaid line--shaft'to raisesaidlower i thrust bearing from frctionall engagement with said-pumpiieck bearing 'to permit the Aaccess of lubricant-to the pump neck bearing.

. u MARVIN B. VAN NESS. 'Vit'nesses H. D. THRUSH,

YJ. B. BOTTORFF.

`of the centrifugal, pump, said line-'shaft f aoy 

